John W. Mollett, An Illustrated Dictionary of Words used in Art and Archaeology (1883)
“ Fools. In Church architecture and decoration, grotesque figures of men with fool’s cap and bells are frequently seen under the seats of choir-stalls and miserere seats. (See the article Obscœna.) Foolscap. A fool’s cap was the device of the Italian society called the Granelleschi, formed at Venice in 1740 to oppose the corruption of the Italian language. ”
